Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005a%26a...435..863m&link_type=abstract
Astronomy and Astrophysics, Volume 435, Issue 3, June I 2005, pp.863-870
Astronomy and Astrophysics
Astrophysics
4
Galaxies: Active, Radio Continuum: Galaxies, Surveys, Galaxies: Evolution
Scientific paper
We present 74-MHz data of 365 B3 VLA sources, which were obtained as a by-product of the observations of Tschager et al. (2003, A&A, 402, 171) who observed a large area of sky with the VLA in A-array. Apart from the lowest-frequency observations of B3 VLA sources performed so far contributing to our on-going multi-frequency study of this survey, these A-array data also provide the first morphological information at this low frequency. The most intriguing result is the discovery of two new Giant Radio Galaxy candidates, B3 1232+397B at a redshift of 3.22 and B3 1419+419 at a redshift of 0.367. This means that B3 1232+397B would be the most distant GRG known to date. At the same time, these two objects are two new examples of sources with recurrent activity. Our results give a foretaste of the impact which extremely low-frequency radio continuum observations will have for the study of source evolution.
Gregorini Loretta
Klein Ulf
Mack Karl-Heinz
Schilizzi Richard T.
Snellen A. G. I.
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